The Mosmatic 61.419 is a car wash boom designed to mount to walls. Bracket design allows the arms to return to resting position you select. The top arm measures 5' 9" and the bottom measures 5' 3". Stainless steel construction provides superior corrosion resistance which is ideal wet environments such as car washes. Equipped with a 3/8" threading on both ends. The boom is able to handle water, oil and air.